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WARNING
For your personal safety, do not handle the sharp
mower blades with bare hands. Careless or
improper handling of blades may result in serious
injury.
WARNING
For your personal safety, blade mounting
capscrews must each be installed with a hex
washer and spring washer, then securely
tightened. Tighten blade mounting capscrew to
30 +/- 3 Nm.
CAUTION
At the moment the mower blades hit a solid
object, stop the engine immediately and check
the blades. The shear pins may be damaged or
cut.
Servicing the Mower Blades
Service Interval: Every 100 Hours or As Required
NOTE: The mower blades must be sharp, balanced, and
straight. These conditions are important for the evenness
of height of mowing and quality of cut. The blunt cutting
edge worsens both the quality of mowing and result of
mowed grass collecting.
1. Remove mower deck (see “Mower Deck Removal”).
2. See Figure 22. To remove blade for sharpening, use
a block of wood to prevent blade rotation while
loosening the capscrew.
3. Remove the capscrew (A, Figure 24), spring washer
(B), spline washer (E), alignment pin (C) and blade
(D). Do not remove the blade adapter (F).
4. Use a file to sharpen blade to a fine edge. If blade is
damaged, it must be replaced.
5. Balance the blade as shown in Figure 23. Center the
blade’s hole on a nail lubricated with a drop of oil. A
balanced blade will remain level.
6. Reinstall the blade with the tabs pointing up toward
the mower deck as shown.
7. Position blades perpendicular to each other as
shown in Figure 26. If not, perform “Check Mower
Blade Timing” in this section.
8. Reinstall the spline washer (E, Figure 24), spring
washer (B) and capscrew (A). Use a wooden block to
prevent blade rotation while tightening the capscrew
(A) 30 +/- 3 Nm.
23
Regular Maintenance
Figure 23. Balancing The Blade
Workbench
Nail
Figure 22. Blade RemovalFigure 22. Blade Removal
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